: a substance that is injected into something

Word History

First Known Use

1950, in the meaning defined above

Time Traveler
The first known use of injectant was in 1950

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Cite this Entry

“Injectant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/injectant. Accessed 7 Jul. 2026.

Medical Definition

injectant

noun
: an allergen that is injected
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